61702225 has 12 divisors (see below), whose sum is σ = 82396636. Its totient is φ = 45564480.

The previous prime is 61702219. The next prime is 61702237. The reversal of 61702225 is 52220716.

It can be written as a sum of positive squares in 6 ways, for example, as 3225616 + 58476609 = 1796^2 + 7647^2 .

It is not a de Polignac number, because 61702225 - 2³ = 61702217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61702225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94602 + ... + 95251.

Almost surely, 2^61702225 is an apocalyptic number.

61702225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61702225 is a deficient number, since it is larger than the sum of its proper divisors (20694411).

61702225 is a wasteful number, since it uses less digits than its factorization.

61702225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189876 (or 189871 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 61702225 is about 7855.0763840971. The cubic root of 61702225 is about 395.1545088006.

The spelling of 61702225 in words is "sixty-one million, seven hundred two thousand, two hundred twenty-five".